Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2015 Infiniti Q50 Base, AWDFACTORY OEM SERVICE PROCEDURE
Engine Assembly Component
| Top view of the engine (view with intake manifold is removed) |
Rear view of the engine | Around the oil filter (2WD) | |||
| Around the oil filter (AWD) | |||||
| Engine front |
| No. | Component | Function |
|---|---|---|
| Camshaft position sensor (PHASE) (bank 1) | CAMSHAFT POSITION SENSOR (PHASE) | |
| Intake valve timing control solenoid valve (bank 1) | INTAKE VALVE TIMING CONTROL SOLENOID VALVE | |
| Intake valve timing control solenoid valve (bank 2) | ||
| Camshaft position sensor (PHASE) (bank 2) | CAMSHAFT POSITION SENSOR (PHASE) | |
| Ignition coil (with power transistor) and spark plug (No. 2 cylinder) | IGNITION COIL | |
| Ignition coil (with power transistor) and spark plug (No. 4 cylinder) | ||
| Ignition coil (with power transistor) and spark plug (No. 6 cylinder) | ||
| Ignition coil (with power transistor) and spark plug (No. 5 cylinder) | ||
| Ignition coil (with power transistor) and spark plug (No. 3 cylinder) | ||
| Ignition coil (with power transistor) and spark plug (No. 1 cylinder) | ||
| Fuel injector (No. 5 cylinder) | FUEL INJECTOR | |
| Fuel injector (No. 3 cylinder) | ||
| Fuel injector (No. 1 cylinder) | ||
| Fuel injector (No. 2 cylinder) | ||
| Fuel injector (No. 4 cylinder) | ||
| Fuel injector (No. 6 cylinder) | ||
| Knock sensor (bank 1) | KNOCK SENSOR | |
| Knock sensor (bank 2) | ||
| VVEL actuator motor (bank 2) | VVEL ACTUATOR MOTOR | |
| VVEL control shaft position sensor (bank 2) | VVEL CONTROL POSITION SENSOR | |
| Engine coolant temperature sensor | ENGINE COOLANT TEMPERATURE SENSOR | |
| Crankshaft position sensor (POS) | CRANKSHAFT POSITION SENSOR (POS) | |
| VVEL actuator motor (bank 1) | VVEL ACTUATOR MOTOR | |
| VVEL control shaft position sensor (bank 1) | VVEL CONTROL POSITION SENSOR | |
| EVAP canister purge volume control solenoid valve | EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE | |
| Engine oil temperature sensor | ENGINE OIL TEMPERATURE SENSOR |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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